The two sealing faces of a slab gate valve are perpendicular to the pipeline axis, its closing member is a single disc, valve equipped with a stretching mechanism. The gate valve is widely applicable for transmission pipeline system of natural gas 、oil products and chemical engineering.

From the aspect of structure style, the through conduit gate valve can be divided into two types of valves with diversion holes and valves without any diversion hole.

 1. Robust Construction
– Designed and manufactured in compliance with API 6D standards, ensuring high reliability and durability for pipeline applications.
– Suitable for high-pressure and high-temperature environments.

2. Slab Gate Design
– The gate (or disc) is a single, flat, slab-like component that moves perpendicular to the flow direction.
– Provides a tight seal when closed, minimizing leakage.
– Ideal for pigging operations in pipelines due to its full-bore design.

3. Double Block and Bleed (DBB) Functionality
– Capable of providing a double seal, isolating the flow from both upstream and downstream sides.
– Allows for venting or bleeding of the cavity between the seals, ensuring safe maintenance and inspection.

4. Sealing Mechanism
– Utilizes metal-to-metal sealing for high-pressure and high-temperature applications.
– Can also be equipped with soft seals (e.g., elastomers) for enhanced sealing in low-pressure or low-temperature conditions.

5. Through-Conduit Design
– Full-bore design ensures minimal pressure drop and unrestricted flow when the valve is fully open.
– Suitable for pipelines requiring pigging or cleaning.

6. Stretching Mechanism
– Equipped with a stretching mechanism that ensures the gate remains in tight contact with the seats, even under varying pressure and temperature conditions.
– Enhances sealing performance and extends valve life.

7. Versatile Actuation Options
– Can be operated manually (handwheel or gearbox) or automatically (electric, pneumatic, or electro-hydraulic actuators).
– Suitable for remote or automated control systems.

8. End Connection Options
– Available with various end connections, including:
– Flange RF (Raised Face)
– RTJ (Ring Type Joint)
– Butt Welding (BW)
– Ensures compatibility with different pipeline configurations.

9. Material Options
– Body and trim materials can be selected based on application requirements:
– Carbon steel for general purposes.
– Stainless steel for corrosive environments.
– Other alloys for specialized applications (e.g., cryogenic or high-temperature services).

10. Pressure and Temperature Range
– Pressure rating: Class 150 to Class 2500.
– Temperature range: Suitable for a wide range, from cryogenic to high-temperature applications.

11. Fire-Safe Design
– Compliant with API 607/API 6FA fire-safe standards, ensuring the valve maintains its integrity in case of fire.

12. Applications
– Widely used in oil and gas pipelines, petrochemical industries, and natural gas transmission systems.
– Suitable for isolation and control of fluids such as crude oil, refined products, natural gas, and water.

These design features make the API 6D Slab Gate Valve a reliable and versatile choice for demanding pipeline applications.

Body material:

• carbon steel,
• stainless steel.

Sizes

• From 2” to 60″

Pressure Ratings

• From 150# to 2500#

Connection Types

• RF (Raised Face)
• RTJ (Ring-Type Joint)
• M (Male)
• F (Female)
• BW (Butt Weld)

Temperature range

• -196 ~ +907℃

Operation

• handwheel,
• gear box,
• electric / pneumatic actuator,
• electro-hydraulic actuator